Brachyelatus marthae: A new species of Chrysolampine Wasp from Eocene Baltic Amber.
[sciencythoughts.blogspot.com]
The highly diverse and economically important parasitoid Wasp superfamily Chalcidoidea is well known with approximately 20 000 extant species on six continents, but relatively few fossil species are known. However, a broad range of Chalcidoid fossils from the Eocene have been described. Two of these fossils, Perilampus pisticus and Palaeocharis rex represent the biologically derived Planidial group. This unique group of parasitoids is characterized by mobile and well sclerotized (thick skinned), but legless, first instar ‘planidial’ larva, which emerges from an egg laid some distance from the host instead of on or in the host. Later instars are of the sac-like type that is typical for Chalcidoidea.
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Didn't understand many words here but the pics are nice.. 
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